The space of repentance in the Qur'an and Hadith holds a special status because the salvation and deliverance of humans from the dangerous and severe waves of sins depend on it. This article, using a descriptive-analytical method and relying on Qur'anic, Hadith, and mystical sources, provides a comprehensive study of the concept of 'repentance and seeking forgiveness' as the central teaching of return in Islamic teachings. The findings show that repentance is not a one-time act but a dynamic process and an evolutionary journey that begins with 'turning away from sin' and extends to the higher stages of 'disconnection from anything other than God' and 'annihilation in God.' The essence of repentance is heartfelt remorse and inner transformation, realized through three pillars: 'knowledge' of the harm of sin, a state of 'remorse,' and 'action' for reparation and future abstinence. True seeking of forgiveness, as explained in the words of Imam Ali (peace be upon him), is a lofty station and is conditional upon several essential factors, including remorse, determination to abstain, fulfilling people's rights, and compensating for obligatory duties.
Examining the verses and traditions confirms the boundless mercy of God and the openness of the door of repentance even for the greatest sinners, provided that the repentance is sincere and genuine. Such repentance not only leads to the erasure of sins and divine forgiveness, but can also transform wrongdoings into good deeds and place the repentant among God's beloved. On the other hand, delaying repentance is a sign of arrogance and causes a hardening of the heart. The conclusion is that repentance is an unavoidable necessity for salvation from the deadly poison of sin and for restoring the servant's relationship with the Creator. This path, when approached with a correct understanding of its levels and conditions and with wise urgency, guarantees both worldly and spiritual happiness and prepares a person for the ascent toward God.